Astra Blue (CAS 82864-57-1)

Astra Blue, known chemically as 1,3-Bis[4-(dimethylamino)phenyl]-1,3-propanedione bisbenzenesulfonate, is a cationic dye used primarily in botanical research for staining acidic plant cell components, such as lignin and cellulose. Its mechanism of action involves binding to the polysaccharide components within plant tissues, enabling detailed visualization of cell walls and other structural features under a microscope. Astra Blue is particularly valued for its ability to provide sharp contrast when paired with other dyes, such as safranin, in dual staining procedures where it offers a distinct color differentiation that enhances the microscopic examination of plant materials. This staining technique is crucial in the study of plant anatomy and physiology, helping researchers to observe and document the complex details of plant tissue organization and to assess changes in response to various environmental conditions or treatments. The dye′s strong affinity for the acidic components of cell walls allows for precise delineation of these structures, thereby facilitating a deeper understanding of plant structural biology and supporting studies in plant development and pathology. Astra Blue′s use in research is thus integral to advancing knowledge in plant sciences, providing essential insights into the cellular architecture and functional dynamics of plant tissues.